18-BC53D1-2
5
Installer’s Guide
TYPICAL FIELD HOOK-UP DIAGRAMS
Notes:
1. Be sure power supply agrees with equipment nameplate.
2. Power wiring and grounding of equipment must comply with local codes.
3. Low voltage wiring to be No. 18 AWG minimum conductor.
4. ODT-B must be set lower than ODT-A.
5. If outdoor ODT-B is not used, connect a jumper wire from W3 to W2.
If ODT-A is not used, connect a jumper wire from W2 to W1.
6. If electric heater does not have a 3rd contactor (CH), connect a jumper
wire from W3 to W2. If electric heater does not have a 2nd contactor (BH),
connect a jumper wire from W2 to W1.
7. X2 must be connected to variable speed air handler terminal W3, as
shown, for proper indoor air flow during the defrost cycle.
LEGEND
FACTORY WIRING
FIELD WIRING
H. OPERATIONAL AND CHECKOUT
PROCEDURES
Final phases of this installation are the unit Operational and
Checkout Procedures which are found in this instruction on
page 8. To obtain proper performance, all units must be
operated and charge adjustments made in accordance with
procedures found in the Service Facts.
I. ELECTRIC HEATERS
Electric heaters, if used, are to be installed in the air han-
dling device according to the instructions accompanying the
air handler and the heaters.
J. START CONTROL
These models have quick start components which are factory
installed.
K. OUTDOOR THERMOSTAT
An outdoor thermostat TAYSTAT250B may be field installed.
For data, see wiring diagram attached to unit and instruction
sheet packaged with outdoor thermostat.
L. SEACOAST SALT SHIELD
All units are shipped with a black Seacoast Shield clipped to
the top of the outdoor coil. Removal of the shield will poten-
tially shorten the life of the joints in the outdoor coil, and
affect the Limited Warranty (See note below).
IMPORTANT:
See Limited Warranty information in Use and Care Manual.